Timing of low E symptoms

Thread starter #1
I inject T and take an AI twice a week (leaving dosage etc out as I think that would only lead to other discussions as I'm not locked in and probably have to adjust dosages etc anyway).
And around 24h before the next T/AI dosage I get low E hints (joint pain mostly).
With the half life of T I would think that is the low T time of the week (and low E going with it) and Arimidex has a shorter half life it should be done doing it's work (E going up again).
Is that timing of the E symptoms normal?